Hydrogen storage in metal-organic frameworks by bridged hydrogen spillover |
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Authors: | Li Yingwei Yang Ralph T |
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Affiliation: | Department of Chemical Engineering, University of Michigan, Ann Arbor, Michigan 48109, USA. |
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Abstract: | The possible utilization of hydrogen as the energy source for fuel-cell vehicles is limited by the lack of a viable hydrogen storage system. Metal-organic frameworks (MOFs) belong to a new class of microporous materials that have recently been shown to be potential candidates for hydrogen storage; however, no significant hydrogen storage capacity has been achieved in MOFs at ambient temperature. Here we report substantially increased hydrogen storage capacities of modified MOFs by using a simple technique that causes and facilitates hydrogen spillover. Thus, the storage of 4 wt % is achieved at room temperature and 100 atm for the modified IRMOF-8. The adsorption is reversible, and the rates are fast. That has made MOFs truly promising for hydrogen storage application. |
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